Doctor insights on:
Interpreting Thyroid Uptake Scan Results
The patient ingests radioactive iodine or has intravenous injection of radiotracer technetium to define structure, size, and function of thyroid gland. Overactive (hyperthyroid) normal, and underactive thyroid glands are determined. Sometimes autoimmune conditions and tumors of the gland can be suspected. Correlative imaging ultrasound, mr imaging, and blood tests ...Read more
I'm in the process of taking a radioactive iodine pill for a 1-123 thyroid uptake scan, will smoking pot affect the results?
No: No effect on result of the scan. ...Read more
I just got results from a thyroid uptake scan it says they found a toxic uninodular goiter and unspecified goiter I also have itp is there a connection and what exactly is a toxic uninodular goiter also my thyroid is enlarge
Get thyroid labs: You most likely already have your thyroid levels checked. If not, you need to get thyroid labs drawn. From the uptake and scan above, your TSH should be low, which indicates hyperthyroidism. The treatment is 1)antithyroid drug, 2)i-131 ablation, 3)surgery. With itp, maybe hold off on surgery for now. Please discuss all of this with your doctor. Good luck. ...Read more
Depends on agent: If using radioiodine, typically the tracer is given on day 1, then an uptake obtained at 4 and 24 hours later. If using pertechnetate, the uptake is done on the same day, and the scan and uptake together take about an hour or so. ...Read more
MAY BE NORMAL:
Normal range of thyroid uptake varies from lab to lab and geographic region to region.
For those labs who accepts 10% to 30% as normal range, the 13.8% may be considered normal but lower range of normal. ...Read more
Typically 5 days: In our lab...5 days.Get a more detailed answer ›
I've done a thyroid u/s. Dr. Called and said they found 2 thyroid nodules. Now I'm going for a thyroid uptake scan. What will this test do or show?
Hot or cold: Thyroid nuclear scan usually with iodine 123 will show whether nodule is active (hot, increased uptake, or nonactive (cold, decreased uptake).More cold nodules are cancer.For patients presenting with thyroid nodules greater than 1 cm. In diameter (up to 20% will be malignant). They should be carefully evaluated, and managed. If greater than 1 cm. Should be closely followed or biopsied. ...Read more
My thyroid uptake scan showed a cold nodule but TSH is normal. Will it need to be removed? It's taking long to see an endo and lab rec''s fna.
Depends: Next step would usually be a thyroid ultrasound and fna. If the, "nodule" is a simple cyst (colloid cyst) then it will likely be aspirated, if a solid nodule it would be biopsied. Most of the time a solid nodule will be negative for malignancy. If positive for malignancy, surgical removal would be the norm. ...Read more
If I don't have graves' disease and my thyroid uptake scan is as follows: range-5% to 30% my readings- 64%, 70%, 65%. What is my best course?
Hyperactive thyroid: Thyroid uptake in range of 64% to 70% usually means overactive thyroid. Graves disease or hyperthyroidism is one cause. An overactive thyroid nodule, thyroiditis, and toxic multi nodular goiter can be other causes. An adenoma of the pituitary gland can sometimes stimulate overproduction of thyroid hormone. Clinical examination, nuclear and/or ultrasound imaging, and various blood tests can help. ...Read more
TSH is constantly suppressed. FT3 borderline high. FT4 borderline low. Tested 5 times. Thyroid uptake scan = *low 5.3% wo nodules. Please help explain.
Thyroiditis: Why are you having your thyroid tested? What are your symptoms? Start from the begining. Medicine is not about scans and numbers. TSH is suppressed by the elevated T3 (liothyronine) as feedback inhibition. I would expect normal to high uptake but it can be low in some cases of Hashimoto's thyroiditis. Thyroid scan in Hashimoto's thyroiditis can mimic a wide range of thyroid disorders. Thyroid may be burning out. ...Read more
Low TSH Borderline low T4 normal t3 (liothyronine). Thyroid uptake scan. Low uptake noted w\o nodules. Radiologist said HYPOTHYROIDISM?! All other possible test norm
Need follow-up: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, there is inconsistency in your results. Both TSH and T4 being low does not add up. You may need to repeat the lab tests, not necessarily the scan, in about 6 months to see what direction these results are going in. ...Read more
My TSH was 1.59 and my radioactive thyroid uptake was 20.3% at 6 hours and 42.7% at 24 hours. Still waiting on the scan results. Is this normal?
I did thyroid uptake test. My results came back as 96.4 percent function of thyroid. What should I know about this?
More info needed: The thyroid uptake test is done to diagnose thyroid problems, particularly thyroid hyper function (hyperthyroidism). You need to ask physician who ordered the test and ask to interpret your results. Previous thyroid blood test results are important to answer your question. ...Read more
How safe is I 123 thyroid uptake and scan test as far as the amount of radiation you are getting during, after the test?
Very safe: The amount of radiation to your thyroid or body is extremely small with a test dose of i123 used for thyroid scans. However, it is a useless test in the evaluation of a thyroid nodule unless your TSH level is below normal. A thyroid nodule of 2.3 cm needs to be biopsied. The thyroid scan is unlikely to change that recommendation. ...Read more
Thyroid scan: Iodine will not interfere with the technicium scan, however the tc99 scan does not tell you much. If a thyroid scan is needed, it should be done with radioactive iodine. This will require that you stop taking iodine supplements, which you really do not need to take anyway. See your endocrinologist. ...Read more
Borderline elevated thyroid uptake 31.5 percent, mild thyromegaly, no definite dominant hot or cold nodules. Should I be concerned? See an endocrinol
Thyroid: As an endocrinologist myself I strongly recommend a visit to a local endocrinologist. You will get a full exam and be told the necessary studies needed in a way you will fully understand. ...Read more
TSI bloodwork test or Thyroid Uptake test with the radioisotopes? Benefits/risks, pros/cons? Are they interchangeable as diagnostic tool for graves?
The first thing you must do is have your doctor order the thyroid labs once he/she has taken a full history and physical exam.
The first thing would be to order the thyroid labs and if they are abnormal the radiology program will look for problems in your thyroid.
Do not get too concerned for now - all may be OK. If not appropriate care will be given after discussion with you.
Keep me posted! ...Read more
My thyroid uptake was high. I feel terrible. Should I consider ablation of the thyroid? My TSH is low normal and my T3 (liothyronine) andt4 are high normal. Help!
Yes/drugs/surgery.: You apparently have a serious issue with your thyroid. Although your lab values are not evident, the fact that you feel bad is enough to see your doctor for urgent treatment. One option is ablation of a nodule, not your whole thyroid, by radioiodine. Another is surgery. If you have high hormone levels, drugs like ptu (propylthiouracil) & DEXA and potass-iodode are needed. Again see your doctor asap for work-up. ...Read more
Tsh was first. 128 was sent for thyroid uptake which was normal. 1 month later now my TSH is. 006 and T4 and T3 (liothyronine) are normal. What could be going on?
Disturbed function: Thyroid function isdisturbed. The cause not yet clear. Follow up needed for diagnosis. Symptoms dictate how often to reevaluate and whether symptoms require treatment. ...Read more
Normal T3 (3.53) and T4 (1.42), very low TSH (0.02), thyrogobulin is 69, thyroid uptake imagining "significantly abnormal and below normal range"...
Reg: thyroids I have done my TSH first it was. 128 & did thyroid uptake it was normal then did TSH 1 month later TSH was. 006 w/ normal T3 (liothyronine) & T4 how?
Endocrinologist: Sounds like you need an endocrinologist to follow you and see what's going on! ...Read more
I had normal tsh, t3, (liothyronine) t4, but antithyroglobulin antibody level is 263 and thyroid uptake showed homogenous uptake at 56%. What should I do?
Auto immune thyroid: Your thyroid functions are normal presence of thyroglobulin antibodies indicate autoimmune disease though more sensitive test is tpo autoimmune disease makes thyroid inefficient and hence iodine trapppping is increased of these people 30 percent will develop undersctivity. ...Read more
One after the other: The exact scanning time after taking the capsule varies according to the isotope and protocol used. For i-123 and low i-131 the uptake and the scan is usually done at 24 hours. A thyroid probe directed to your neck measures the radioiodine uptake, this is follow by a gamma camera scan which makes an image of your thyroid gland based on the radioiodine distribution. ...Read more
Single hot 1 CM nodule on thyroid scan with normal thyroid blood panels & uptake. Chances of malignancy?
Not likely: "hot" nodules are rarely cancer and most often represent benign follicular adenomas. These are also known as "autonomous" nodules because they make thyroid hormone but don't respond to the body's normal signals telling them when to stop making the hormone. The vast majority of thyroid cancer nodules are "cold" on a thyroid scan. ...Read more
Usually capsule: Usually liquid in capsule and is ingested by patient with liquid drink. Sometimes some patients can not swallow pills and can be administered in these rare cases, if facility is informed in advance, in liquid form. ...Read more
No: The dose is much too small. Talk w/your doctor if you're concerned. ...Read more
5.58 TSH level a month ago with one hot nodule and normal thyroid uptake found on nuclear scan from friday. Not on hormone therapy. Please explain?
If you had a "hot": Nodule, your TSH would be low not high and your thyroid uptake would probably be elevated as well, the so-called nodule may be the only area of your thyroid that is functioning appropriately. Depending upon other factors and other lab, you may have had recent thyroiditis or may even need thyroid replacement. Check w/your doctor and/or consider a thyroid specialist. ...Read more
Radioactive iodine uptake test - can I still travel afterwards or would I have to hide out for a few days?
No need to hide.: Once you are released by your doctor you are no longer a hazard, but you may set off radiation detectors at a port. This could be very difficult in a foreign country. Best to carry a brief letter noting your recent treatment. ...Read more
It will not: An i131 test does not "diagnose" goiter. Goiter is just a term meaning an enlarged and/or nodular thyroid. An i131 scan is a "fucntional" scan. It is used to determine if a nodule within the thyroid is "hot" - picks up a lot of iodine: hyper-metabolic. A "cold" nodule does not concentrate the iodine: hypometabolic. There is a lower risk of thyroid cancer in "hot" nodules. ...Read more
I'm due to have a thyroid scan in 3 days. Yesterday, I took two 25 mg antihistamine pills. Will this affect the results?
It means: You have multiple fluid-filled of minimally cellular nodules and cysts, which are present in approx 50% of healthy normal individuals. Discuss the full findings with your doctor. ...Read more
Just got the results of thyroid scan. The range is 5% to 30% in 24hrs. Mine's is 64% first day, 70% second day and 64.8% for the last day. Help!?
Hyperthyroidism: Your values of thyroid uptake are increased indicative of probable graves disease or hyperthyroidism especially if scan showed homogeneous enlarged thyroid. Sometimes oral medication is used to control hyperthyroidism. Sometimes medical therapy does not maintain control of disease. Some people have radioactive ablation of thyroid with i131which destroys gland, patient takes daily hormone supplements. ...Read more
Need more info: Not sure what you mean by "test results" but u cannot know that u have multinodular goiter from a blood test. A thyroid ultrasound can give u this diagnosis in which case u will need a blood test called TSH to know what to do next. No thyroid scan needed unless the TSH is low. Thyroid ultrasound vs. Biopsy might be needed depends on the size and characteristics of the nodules but need more info. ...Read more
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